-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
*/
#include <stddef.h>
*
*/
+static inline void
+ip_frag_memmove(char *dst, char *src, int len)
+{
+ int i;
+
+ /* go backwards to make sure we don't overwrite anything important */
+ for (i = len - 1; i >= 0; i--)
+ dst[i] = src[i];
+}
+
/*
* Reassemble fragments into one packet.
*/
struct rte_mbuf *
-ipv6_frag_reassemble(const struct ip_frag_pkt *fp)
+ipv6_frag_reassemble(struct ip_frag_pkt *fp)
{
- struct ipv6_hdr *ip_hdr;
+ struct rte_ipv6_hdr *ip_hdr;
struct ipv6_extension_fragment *frag_hdr;
struct rte_mbuf *m, *prev;
uint32_t i, n, ofs, first_len;
uint32_t last_len, move_len, payload_len;
+ uint32_t curr_idx = 0;
first_len = fp->frags[IP_FIRST_FRAG_IDX].len;
n = fp->last_idx - 1;
m = fp->frags[IP_LAST_FRAG_IDX].mb;
ofs = fp->frags[IP_LAST_FRAG_IDX].ofs;
last_len = fp->frags[IP_LAST_FRAG_IDX].len;
+ curr_idx = IP_LAST_FRAG_IDX;
payload_len = ofs + last_len;
/* previous fragment found. */
if (fp->frags[i].ofs + fp->frags[i].len == ofs) {
- ip_frag_chain(fp->frags[i].mb, m);
+ RTE_ASSERT(curr_idx != i);
+
+ /* adjust start of the last fragment data. */
+ rte_pktmbuf_adj(m,
+ (uint16_t)(m->l2_len + m->l3_len));
+ rte_pktmbuf_chain(fp->frags[i].mb, m);
+
+ /* this mbuf should not be accessed directly */
+ fp->frags[curr_idx].mb = NULL;
+ curr_idx = i;
/* update our last fragment and offset. */
m = fp->frags[i].mb;
}
/* chain with the first fragment. */
- ip_frag_chain(fp->frags[IP_FIRST_FRAG_IDX].mb, m);
+ rte_pktmbuf_adj(m, (uint16_t)(m->l2_len + m->l3_len));
+ rte_pktmbuf_chain(fp->frags[IP_FIRST_FRAG_IDX].mb, m);
+ fp->frags[curr_idx].mb = NULL;
m = fp->frags[IP_FIRST_FRAG_IDX].mb;
-
- /* update mbuf fields for reassembled packet. */
- m->ol_flags |= PKT_TX_IP_CKSUM;
+ fp->frags[IP_FIRST_FRAG_IDX].mb = NULL;
/* update ipv6 header for the reassembled datagram */
- ip_hdr = (struct ipv6_hdr *) (rte_pktmbuf_mtod(m, uint8_t *) +
- m->pkt.vlan_macip.f.l2_len);
+ ip_hdr = rte_pktmbuf_mtod_offset(m, struct rte_ipv6_hdr *, m->l2_len);
ip_hdr->payload_len = rte_cpu_to_be_16(payload_len);
* other headers, so we assume there are no other headers and thus update
* the main IPv6 header instead.
*/
- move_len = m->pkt.vlan_macip.f.l2_len + m->pkt.vlan_macip.f.l3_len -
- sizeof(*frag_hdr);
+ move_len = m->l2_len + m->l3_len - sizeof(*frag_hdr);
frag_hdr = (struct ipv6_extension_fragment *) (ip_hdr + 1);
ip_hdr->proto = frag_hdr->next_header;
- memmove(rte_pktmbuf_mtod(m, char*) + sizeof(*frag_hdr),
+ ip_frag_memmove(rte_pktmbuf_mtod_offset(m, char *, sizeof(*frag_hdr)),
rte_pktmbuf_mtod(m, char*), move_len);
rte_pktmbuf_adj(m, sizeof(*frag_hdr));
* Pointer to the IPV6 fragment extension header.
* @return
* Pointer to mbuf for reassembled packet, or NULL if:
- * - an error occured.
+ * - an error occurred.
* - not all fragments of the packet are collected yet.
*/
#define MORE_FRAGS(x) (((x) & 0x100) >> 8)
#define FRAG_OFFSET(x) (rte_cpu_to_be_16(x) >> 3)
struct rte_mbuf *
rte_ipv6_frag_reassemble_packet(struct rte_ip_frag_tbl *tbl,
- struct rte_ip_frag_death_row *dr, struct rte_mbuf *mb, uint64_t tms,
- struct ipv6_hdr *ip_hdr, struct ipv6_extension_fragment *frag_hdr)
+ struct rte_ip_frag_death_row *dr, struct rte_mbuf *mb, uint64_t tms,
+ struct rte_ipv6_hdr *ip_hdr, struct ipv6_extension_fragment *frag_hdr)
{
struct ip_frag_pkt *fp;
struct ip_frag_key key;
- uint16_t ip_len, ip_ofs;
+ uint16_t ip_ofs;
+ int32_t ip_len;
rte_memcpy(&key.src_dst[0], ip_hdr->src_addr, 16);
rte_memcpy(&key.src_dst[2], ip_hdr->dst_addr, 16);
ip_ofs = FRAG_OFFSET(frag_hdr->frag_data) * 8;
/*
- * as per RFC2460, payload length contains all extension headers as well.
- * since we don't support anything but frag headers, this is what we remove
- * from the payload len.
+ * as per RFC2460, payload length contains all extension headers
+ * as well.
+ * since we don't support anything but frag headers,
+ * this is what we remove from the payload len.
*/
ip_len = rte_be_to_cpu_16(ip_hdr->payload_len) - sizeof(*frag_hdr);
IP_FRAG_LOG(DEBUG, "%s:%d:\n"
"mbuf: %p, tms: %" PRIu64
- ", key: <" IPv6_KEY_BYTES_FMT ", %#x>, ofs: %u, len: %u, flags: %#x\n"
+ ", key: <" IPv6_KEY_BYTES_FMT ", %#x>, "
+ "ofs: %u, len: %d, flags: %#x\n"
"tbl: %p, max_cycles: %" PRIu64 ", entry_mask: %#x, "
"max_entries: %u, use_entries: %u\n\n",
__func__, __LINE__,
- mb, tms, IPv6_KEY_BYTES(key.src_dst), key.id, ip_ofs, ip_len, frag_hdr->more_frags,
+ mb, tms, IPv6_KEY_BYTES(key.src_dst), key.id, ip_ofs, ip_len,
+ RTE_IPV6_GET_MF(frag_hdr->frag_data),
tbl, tbl->max_cycles, tbl->entry_mask, tbl->max_entries,
tbl->use_entries);
+ /* check that fragment length is greater then zero. */
+ if (ip_len <= 0) {
+ IP_FRAG_MBUF2DR(dr, mb);
+ return NULL;
+ }
+
/* try to find/add entry into the fragment's table. */
fp = ip_frag_find(tbl, dr, &key, tms);
if (fp == NULL) {
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